gistfile1.m

  UIImageView __block *localFeatherImageView = [ [ UIImageView alloc ] initWithFrame:CGRectMake( 0.0f, 0.0f, featherAssetSize.width, featherAssetSize.height ) ];
  
  self->featherImageView = localFeatherImageView;
  self->featherImageView.animationImages = [ featherAssetDictionary objectForKey:[ NSNumber numberWithInt:APContentDictionaryKeyAnimationImages ] ];
  self->featherImageView.animationDuration = animationDuration;
  self->featherImageView.center = self.center;
  [ self->featherImageView startAnimating ];
  [ self.superview addSubview:self->featherImageView ];
  
  void ( ^removedFeatherImageViewBlock )( void ) = ^
  {
    [localFeatherImageView removeFromSuperview ];
    objc_release( localFeatherImageView );
  };